package com.erp.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.codec.ServerCodecConfigurer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
public class FilterToken implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //1.获取token  header
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        String token = request.getHeaders().getFirst("token");

        if (token == null) {
            System.out.println("没有获取到token");
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        if (!"123456".equals(token)) {
            System.out.println("token是错误的");
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();

        }

        //获取到token并且token是正确的
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }

}

